Related Experiment Video
Updated: Jul 15, 2026
07:34
Biogas Purification through the use of a Microalgae-Bacterial System in Semi-Industrial High Rate Algal Ponds
Published on: March 22, 2024
[Complex technology of waste demercuration solutions purifying from mercury]
Meditsina Truda I Promyshlennaia Ekologiia
|April 18, 2007
Summary
Adding polyiodide oxidizers to AN-31 and AV-17 ion exchangers significantly enhances mercury removal from industrial solutions. This method purifies wastewater to meet maximum allowable concentration (MAC) standards.
Area of Science:
- Environmental Chemistry
- Materials Science
- Chemical Engineering
Context:
- Industrial wastewater often contains toxic mercury compounds.
- Ion exchange resins are used for water purification.
- Existing methods may not achieve stringent mercury limits.
Purpose:
- To investigate the efficacy of AN-31 and AV-17 ion exchangers for mercury anion complex sorption.
- To evaluate the impact of adding a polyiodide oxidizer to the ion exchange sorbent.
- To develop a practical technological scheme for demercuration of industrial wastewater.
Summary:
- Sorption of mercurial anion complexes was studied using AN-31 and AV-17 ion exchangers in specific forms.
- Incorporating a polyiodide oxidizer into the sorbent demonstrably improved the purification efficiency for mercury-containing solutions.
- The enhanced sorbent successfully reduced mercury levels to meet the maximum allowable concentration (MAC).
Impact:
- Provides an effective method for purifying mercury-contaminated industrial wastewater.
- Offers a practical technological scheme for demercuration processes.
- Contributes to environmental protection by reducing mercury pollution from industrial effluents.
Related Concept Videos
02:36Oxymercuration-Reduction of Alkenes
Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
01:30Biological Treatment of Effluent and Waste Water
Biological wastewater treatment relies on the metabolic activity of microorganisms to remove pollutants from sewage. In modern treatment systems, this process is organized into sequential stages that progressively reduce solid material, dissolved organic matter, and microbial contamination. Each stage plays a distinct role in improving water quality and preparing the effluent for safe discharge or reuse.Primary and Secondary TreatmentPrimary treatment is a physical process that removes large...
01:27Microbial Leaching
Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
01:30Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
01:29Downstream Processing
Downstream processing begins once fermentation is complete and involves a series of steps to recover and purify products such as acids, vitamins, antibiotics, or proteins.Cell HarvestingFor example, for intracellular protein-based products, the first step is harvesting the cells. This is typically achieved using centrifugation or filtration to separate the cells from the liquid phase.Cell Disruption for Intracellular ProductsIf the target product is intracellular, the harvested cells must be...
00:46Bioremediation
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.